Depthograph plate holder



Au- 30, 1932 l c. w. KANou nsrrooana m'rs HOLDER Filed-luy 23. mso 2 sheets-sheet 1 FIGA.

FIG.2

INVENToR Clarence W Kano/ ATTORNEY Allg. 30, 1932. v C, w, KANQLT 1,874,047l

DEPTHOGRAP'H PLATS HOLDER mvENToR (/afence W Kano/ ma@ @nm Patented Aug. 3o, 1932 i 1,874,047

UNITED STATES PATENT OFFICE CLARENCE W. XANOLT, F NEW YORK, N. Y. DEIVTHOGBAH PLATE HOlIIDlB' Application led lay 23, 1930. Serial lo. 454,861.

My invention relates to photographic ap- Fig. 2 is a vertical sectional view of the paratus, such as is described in my United holder shown in Fig. 1; States Letters Patent N o. 1,260,662, issued Fig. 3 is a cross-section, taken on line 3 3 March 26, 1918, in which I describe the takin Fig. 1;

.5 ing of a stereoscopic picture bymeans ofshift- Fig. 4 is a cross-section, taken on line 4-4 ing the camera throughout an arc about the in Fig. 1; and object being photographed, and at the same Fig. 5 is -a cross-section, taken on line 5 5. time continuously lnterposing a lined screen in Fig. 1. intermediate the sensitized plate and the lens Similar reference numerals refer to simiof the camera. lar partsv throughout the entire description. 00

In devices of this character, it is essential As shown in the drawings, my plate-holder that the motion of the plate with relation to comprises a frame having a top 1, bottom 2, the lined screen be steady and free from and sides 3 and 4. In the frame is mounted jerks. It is also essential that the same rate a lined screen 5, of the type described in my l5 of movement be imparted to the top of the Patent No. 1,260,682. u plate as is'imparted to the bottom thereof. A photographic plate 6 is mounted in the These things are vital to the production of a plate-holder, with its face in contact with satisfactory stereoscopic picture. the lined screen 5. A bar 7 is mounted in the The object of my invention is, to provide 'lower part of the plate-holder, and is proo a plate-holder in which the photographic vided with upwardly extending protuber- 7 plate is moved horizontally across'a lined ances 8 and 9, on which the lower edge; of screen during the exposure, the distance the photographic plate 6 rests. through which the plate is moved being ap- The photographic plate 6 is held in contact proximately the distance from one transparwith the bar 7 by means of coil springs 10 ent line of the screen to the next. I have found and 11, the upper ends of which are secured in practice that ifthe attempt is made to slide to hooks 12 and 13, which extend over the the plate along a support that a large number top edge of the photographic plate 6. The of negatives are imperfect as the plate will lower ends of these springs 10 and 11 are move against excessive friction, and conseprovided with knobs 14 and 15, which are quently, unsteadily and jerkily. This results adapted to be inserted in sockets 16 and 17 8. from the fact that the edge of a glass sensiformed inthe bar 7, providing for the easy tized plate is usually sharp and somewhat attachment or disengagement between the uneven. An important object of my device is springs 10 and 11 and the bar 7 A detent to cause the plate to move smoothly and ac- 34 is formed on one end of the bar 7, which curately. This I have accomplished by sup: prevents the photographic plate 6 from slid- '85 porting it on a swinging bar hereinafter reing on said bar 7. ferred to. The bar 7 is secured in place by means of I have employed the trade-mark Depthostrips 22 and 23, formed of metal which is graph, covered by certificate of registration suiiciently flexible to permit the bar 7 to No. 261,335, of September 17, 1929, as prOpswing or move horizontally. These metal 9o erly describing stereoscopic pictures produced strips 22 and 23 are secured at theirv up r by following the method described in my ends, by means of screws 20 and 21, to blocks hereinbefore mentioned patent. 18 and 19, the screws 20 and 21 extending into A concrete embodiment of my lpresent in the sides 3 and 4 of the p1a1&e.l101der 95 'v'."ngtion is illustrated in the accompanying In order to press the photographic plate 6 wdratings, which are to be considered as a part tightly into contact with the lined screen 5, bf this specification, in ,which- I provide a plurality of removable bow Fig. 1 is an elevation of a plate-holder emsprings 24 and 25. As illustrated., these are bodying my improvement, partly broken two in number. The ends of these bow away to show the interior construction; springs 24 and 25 are inserted into the edges v prises a pusher 29, which'is carried by a screw 30. A spring 31 is provided to hold the pusher 29 against the screw 30 when there is no plate 6 in the plate-holder. The plate-holder is provided with opaque vslides 32 and 33, of the usual construction.

In practice I have found it desirable to form the pitch of the screw 30 so that one turn of the screw 30 will be equal to the distance the plate 6 is to be moved, in order that a single turn ofthe screw 30 during the exposure will be all-that is required. I do not describe the mechanism for rotating the screw 30, as obviously it forms no part of the construction of the plate-holder.

It is obvious from the hereinbefore contained description, that the same construction can be employed for a horizontal plateholder. f Although I have described a specific form of mechanism for moving the photographie plate 6, it may in some cases be found desirable to move the lined screen 5 instead of the plate 6; and .I therefore do not desire to be understood as limiting myself, in the broader aspect of my invention, to the specic construction shown and described except as such limitations may appear in the hereinafter appended claims. i

Having described my invention, what I regard as new, and desire to obtain by Letters Patent of the United States, is:

1. A depthograph plate holder, having opaque means to shield the plate when inthe holder, said holder comprising a frame having top, bottom and sides, a lined screen in said plate holder, means to hold said screen against movement, a photographic plate, spring means to hold said photographic plate against said lined screen, a laterally movable bar on which said plate is mounted, iexible means which carry said bar spring-actuated means to hold said plate on said bar, means at one side of said plate holder which engages one edge ofsaid plate, and rotatable means to actuate said last named means to move said plate.

2. A depthograph plate holder, having opaque means to shield the plate when in the holder, said holder comprising a frame having top, bottom and sides, one of said sides being formed of unyielding material, a lined screen in said plate holder, means to hold said screen against movement, a photographic ysaid plate holder,

asv-1,047

plate, spring means to hold said photographis plate against said lined screen, a laterally movable bar on which said plate is mounted, resilient means to support said bar, spring-actuated means to hold said plate on said bar, means at one side of said plate holder which engages one edge of said plate, and rotatable means to actua-te said last named means to move said plate.

3. A depthograph plate holder, having opaque means to shield the plate when in the holder, said holder comprising a framehaving top, bottom and sides, a lined screen in said plate holder, means to hold said screen against movement, a photographic plate, spring means to hold said photographic plate against said lined screen,

is mounted, spring-actuated means to hold said plate on said bar, a detent to prevent said plate moving means at one side of said plate holder which engages one edge of said plate, and rotatable means toactuate said last named means to move said plate and bar.

4. A depthograph plate holder, having opaque means to shield the plate when in the holder, said holder comprising a frame having top, bottom and sides, a lined. screen in means to hold said screen against movement, a photographic plate, spring means to hold said photographic plate against said lined screen, a laterally movable bar on which said plate is mounted, a pair of flexible metal strips which support said bar, spring-actuated means to hold said plate on said bar, rotatable means at one side of said plate holder which engages one edge of saidplate, and a spring to hold said plate-moving means in engagement with said rotatable means when the photographic plate is out of said holder.

' -5. A depthograph plate holder, having opaque means to shield the plate when in the holder, said holder comprising a frame having top, bottom and sides, oneof said sides being formed of unyielding material, a` lined screen in said plate holder, means to hold said screen against movement, a photographic plate, spring means to hold said photographic plate against said vlined screen, a laterally movable bar on which said plate is mounted, resilient means to support .said bar, actuated means to hold said plate on said bar,

a laterally movable bar swingingly supported on which said plate Springlongitudinally on said bar,

means at one side of saidplate holder whichl 1 6, A depthograph plate holder, havingy opaque means -vto shield the plate when in the holder, said ing top, bottom and sides, one of said sides holder comprising a frame havbeing formed of unyielding material-,ma lined screen said plate holder, means to hold .holder to actuate said screen against movement, a graphic plate, means to hold said photographic plate against said, lined screen, a laterallv movable bar on which said plate is mounted, there being sockets in said bar, plurality of coil springs which detachablly engage the top of said plate, knobs on the ower ends of said springs tted to said sockets, a pusher at one side of said plate holder which engages one edge of said plate, a screw mounted in the unyielding side of said plate said pusher and move said plate. Y

7. In a depthograph plate holder having opaque means to shield the plate when in the c holder,

tzed plate and means /to hold them in con-VA a lined screen in said holder, a sensiy tact, a' support for said plate yieldable means to hold said plate against movement on said support, and -iiexible supporting means for said plate sulport.

LARENCE W. KANOLT. 

